Core-making device.



Uw [d 3 3 W. JOHNSTON &'C. ROMER.

CORE MAKING DEVICE.

APPLICATION FILED ocT.9. 1914.

Patented Aug. 10, 1915.

SHINCITQN. DA c.

coLUMBIA WILLIAM JOHNSTON AND CHARLES HQROMER, or DAYTON, oHIo.

CORE-MAKING DEVICE.

Specification of Letters Patent.A p Patented Aug, 10, 19u15.

Application filed october o, 1914. serial No. 865,864.

T0 all whom'it may concern.'

Be it known that we, VILLIAM JOHNSTON and CHARLES H; ROMER, citizens ofthe United States, residing at Dayton, in the county of Montgomery andState of Ohio, have invented certain new and useful Improvements inCore-Making Devices, of which the following is a specification.

This invention relates to new and useful improvements in core makingdevices.

The principal object of our invention is to provide a simple, cheap andeilicient device for makinga plurality of cores in approximately thetime it takes to produce one. Not only is it possible to make a largenumber of cores with our improved device,- but the mechanism of thelatter may be` readily set to produce cores of a desired size, thelatter being properly vented by penetrating means of anv equally.unique` proved core-making device. Fig. 2 is a side` elevation of thedevice, kshowing the same in readiness to make several cores. Fig. 3 isa detail view of a portion of the device, showing in particular onefunction of the locking means. Fig. 4 is a sectional view of a portionof the device, showing one of the vent rods after it has been forcedthrough a plunger and core-making barrel. Fig. 5 is a perspective viewof oneof the locking devices. Fig. 6 is an elevational view of acylinder for setting the mechanism of the device to a position to makecores of a desired size, and Fig. 7 is a sectional view tak-en throughthe device shown in Fig. 2 along the longitudinal axis of the left-handrod which extends below the core barrels, and at right angles to theplane of the paper. j

Throughout the specification and drawings, similar reference charactersdenote corresponding parts.

1n a detailed description of our invention, 1 designates a longitudinalmember preferably constructed of metal. Extending through the middleportion of the member 1, and firmly secured therein, is a plurality ofcore barrels or cylinders 2, preferably of similar size and shape anddisposed in parallel relationL to each other. Rigidly secured to, andprojectingupwardly from the longitudinal member 1, one on each side ofthe longitudinal row-of core barrels 2, are rods 3 which loosely passthrough bores in a longitudinal member 4 similar to the longitudinalmember 1. The upper ends of the rods 3 extend loosely through verticalcylinders 5 whose lower ends fit tightly within the bores through whichthe rods 3 loosely pass. Surrounding the lower portions of the rods 3,are coil springs 6, the lower ends of which rest on the longitudinalmember 1 while the upper ends thereof extend loosely into the. cylinders5 and engage shoulder portions 6a in the latter. By means of thesesprings 6 the longitudinal members 1 and 4 are normally held apart. (SeeFigs. 2 and 3).

Passing through the longitudinal member 4,l and firmly secured thereinby means of screws 7, are the stems 8 of plungers 9. These plungers areso disposed above the core barrels 2 that they will enter and occupydifferent positions in the latter when the longitudinal member 1 ismoved toward the longitudinal member 4. The plungers 9 and stems-8thereof are cast hollow to permit vent rods 10 to loosely passtherethrough into the core barrels 2. These vent rods 10 firmly dependfrom a bar 11, eachy end of which'is bored out Vto Vloosely receive acylinder 5. Surrounding the cylinders 5, between the longitudinal member4 and bar 11, are coil springs 12 which normally hold the bar 11 asuflicient distance above the member 4 to keep the vent rods 10 abovethe lower ends of the plungers 9. However, the bar 11 may be depressedagainst the tension of the springs 12, to force the vent rods 10completely through said plungers for a purpose to be hereinafterexplained. (See Fig. 4.)

When the longitudinalmember 1 is in its lowermost position withreference to the member 4, the rods 3 will proj ect a suiiicientdistance above their respective cylinders 5 to receive removable collars13. The collars 13 and rods 3 are so constructed that when the formerare placed in a certain position on the latter, a bore will extendthroughV both to receive a pin 15 by means 0f which the collars. 13maybe irmlysec'ure'd to said rods.

Adapted to be readily slipped on the rods 3, between the collars 13 andcylinders 5, are sleeves or cylinders 16 of different lengths for apurpose to be hereinafter described. When in position 4on the rods 3,these sleeves 16 will rest upon the flanged portions 17 ofthe cylinders5, said anged portions also serving to limit the movement of the bar 11when the latter is forced upwardly by the springs`12. (See Figs. 1, 2and 6.)

For the purpose of supporting the device in an upright position, thefollowing construction is provided: Projecting from, and integral withthe longitudinal member 4f, one on each side of the lower end of theleft hand cylinder 5, are bosses 18. Similar bosses 19 project from thelongitudinal member il opposite the lower end of the right hand cylinderSecured in a vertical bore in each one of the bosses 18, by means of acounter-sunk screw 20, is a rod 21 which eX- tends downwardly a slightdistance below the lower ends of the core barrels 2. A` similar rod 22is secured in a vertical bore in each one of the bosses 19, by means ofa countersunk screw 23; the rods 21 forming with the rods 22, four legsupon which the device is supported in an upright position. Each pair ofthese legs is spaced a suicient distance apart to permit thelongitudinal member 1 to be readily moved up and down between them. y

By means of the following construction, the longitudinal member 1 may belocked in an adjusted position, or, in other words, its movement may belimited in either direction with reference to the longitudinal member 4:Provided on two of the rods 21 and 22 which are on the same side of thelongitudinal member 1, are collars 24 adjustable on said rods by meansof screws 25. Each collar 2-1 has a cylindrical extension 26 which alsoslides over the rods 21 and 22 and to the lower end of which is rigidlysecured a cap 27 after said extension loosely passes through an aperture28 in a latch 29. Each latch 29 has a tongue portion 30 adapted to beturned into the path of the longitudinal member 1 by an upright arm 31integral with the other end of said latch (see Figs. 4land Byunloosening the screws 25, the collars 21 may be moved along the rods 21and 22 to a position thereon in which it is desired to turn the tongueportion 30 of the latch 29 into the path of the longitudinal member 1during either its upward or downward movement. In Fig. 2 the tongueportion 30 is in a position which( limits the upward movement of themember 1, while in Fig. 3 it is shown in a position which limits thedownward movement of said member. The longitudinal member 1 has concavelrecessed portions 32 and 33 to permit it to readily pass the collars 24during its upward and downward movement.

In operation, the ends of the longitudinal members 1 and 4 are firmlygripped by the hands of the operator, and the member 1 moved toward themember t. When the member 1 has been drawn upwardly a desired' distance,the collars 24 may be moved along the rods 21 and 22 to a position inwhich the tongue portions 39 of the latches 29 may be forced below themember 1 to hold it in its elevated position against the tension of thesprings 6. (See F ig. 3). By withdrawing the pins 14C, the collars 13may then be removed from the upper ends of the rods 3 to permit acylinder 16 of the desired length to be slipped on the upper end of eachof said rods, after which the collars 13 may again be pinned to the rods3 above the cylinders 16. As the cylinders 16 rest upon the cylinders 5,they will form a barrier to the downward movement of the collars 13,andl as the latter are pinned to the rods 3 which are attached to themember 1, said member will be held in an elevated position by saidcylinders 16. The tongue portions 30 of the latches 29 may now be movedfrom under the member 1, as the only function of'said levers in thisinstance is to hold said member in an elevated position untilthecylinders 16 can be inserted or removed. Since the core barrels 2 areattached to the member 1 and the plungers 9 to the member d by which thecylinders 5 are supported, it will now be observed that the length ofthe cylinders 16 will determine the distance the member 1 dare' not gobelow the member 4t, or the highest position of the plungers 9 in thecore barrels 2. rlhus it is possible by means of the cylinders 16, to soset the plungers 9 within the core barrels 2 as to produce cores of adesired length. l/Vhen the plungers 9 have been so set, the collars 2stare moved along the rods 21 and 22 to a position in which the tongueportions 30 of the latches 29 may be moved into Contact with the uppersurface of the member 1, as shown in F ig. 2. rllhe device is thenfirmly grasped by the hands and the core barrels 2 thrust down one ormore times upon the wet sand, whereupon the latter will be forcedtightly into said barrels against the plungers 9 to form cores 3/1. Theforce of the impact ofthe core barrels 2 upon the wet sand will not movethe member 1 upwardly beyond its set position, because such a movementwill be restrained by the tongue portions 30 of the latches 29. Afterthe cores have been formed in the barrels 2, the bar 11 is forceddownwardly by the hand or hands, to push the rods 10 through theplungers 9 and into the cores 34' a desired distance for the purpose offorming vent holes in the latter. after which said bar will be returnedto its CTX Linien/ia normal position by the springs 12. `(See Figs. 2and 4f). To remove the cores 34, the tongue portions 30 of the latches29 are moved out of the path of the member 1 and the latter elevated,whereupon the plungers 9 will torce said cores out of the lower ends ofthe barrels 2.

lt will now be seen that by the use of our improved device, a pluralityof cores may be made quickly and eiiiciently, and properly vented andremoved.

Wvo do not wish to be limited to the details of construction andarrangement herein shown and described, and any changes or alterationsmay be made therein to suit different conditions of use.

Having described our invention, we claim:

l. A core-making device comprising a plurality of hollow members,plungers movable in said members, coinpressible means for varying thepositions of the plungers in said members, and means :tor locking saidcompressible means in an adjusted position, substantially as described.

2. A core-making device comprising a plurality oi"- hollow members,plungers movable in said members, compressible means for collectivelyvarying the positions of the plungers in said members, penetra-ting.devices, and means for forcing said devices through the plunger-s toproduce vent holes in the cores, substantially as described.

3. A core-making device comprising a plurality of hollow members,plungers movable in said members, compressible means for varying thepositions of the plungers in said members, means for locking saidcompressible means in an adjusted position, penetrating devices, andmeans for collectively torcing said devices through the plungei's toproduce vent holes in the cores, substantially as described.

fi. A core-making device comprising hollow members arranged inlongitudinal alinement, plungers movable in said members, compressiblemeans for varying the positions of said plungers in their respectivehollow members, devices for locking said compressible means in anadjusted position, rods adapted to loosely pass through said plungers,and means for collectively forcing said rods through the plungers toproduce vent holes in the cores, substantially as described.

A core-making device comprising a plurality of barrels, plungers movablein said barrels, a longitudinal member to which said barrels are securedin vertical alinement with each other, another longitudinal membersupporting said plungers insimilar alinement, upright members adapted toguide said longitudinal members during a movement toward and away fromeach other to vary the positions of said plungers in their respectivehollow members, and a device for limiting themovement of said barrelsupporting member in either direction, substantially as described.

6. A core-making device comprising a plurality of barrels, plungersmovable in said barrels, a longitudinal member to which said barrels aresecured in vertical alinement with each other, another longitudinalmember supporting said plungers above said barrels, upright membersadapted to guide said longitudinal members during a movement toward andaway from each other to vary the positions ot said plungers in theirrespective hollow members, and detachable means carried by said uprightmembers to limit the movement of said barrel-supporting member from theplunger-supporting member, substantially as described.

7. A core making device comprising a plurality of barrels, plungersmovable in said barrels, a longitudinal member to which said barrels aresecured in vertical alinement, another longitudinal member supportingsaid plungers above said barrels, upright members carried by thebarrel-supporting member passing loosely through the plunger-supportingmember, caps on the tops ot said upright members above theplunger-supporting member, and means insertible between said caps andthe latter member to limit the movement of the barrelsupporting memberfrom said plunger-supporting member, substantially as described.

8. A core-making device comprising a plurality of barrels, plungersmovable in said barrels, a longitudinal member to which said barrels aresecured in vertical alinement, another longitudinal member supportingsaid plungers above said barrels, rods carried by the barrel-supportingmember passing loosely through the plunger-supporting member, removablecaps carried by the tops of said rods above the plunger-supportingmember, and cylinders insertible on said rods between said caps and thelatter member to limit the movement of the barrelsupporting member fromsaid plunger-supporting member, substantially as described.

9. A core-making device comprising a plurality of barrels,plungersmovable in said barrels, a longitudinal member from which saidbarrels depend, another longitudinal member supporting said plungersabove said barrels, rods secured to the barrelsupporting member passingloosely through the plunger supporting member, cylinders mounted on saidlast named member through which said rods also pass, caps removablymounted on said rods above said cylinders, and sleeves adapted to beinserted on said rods between the caps and cylinders to limit themovement of the barrelsupporting member away from the plungersupportingmember, substantially as described.

plurality of barrels, plungers movable in` said barrels, a longitudinalmember from which said barrels depend, another longitudinal membersupporting said plungers above said barrels, rods secured to thebarrel-supporting member passing loosely through the plunger supportingmember, coil springs encircling said rods between said members to holdthem normally apart, cylinders mounted on said last named member throughwhich said rods also pass, removable collars secured to said rods abovesaid cylinders, and sleeves adapted to be inserted on said rods betweenthe caps and cylinders to limit the movement of the barrel-supportingmember away from the plunger-supporting member, substantially asdescribed. e

11. A core-making device comprising a plurality of barrels, plungersmovable in said barrels, a longitudinal member from which said barrelsdepend, another longi tudinal member supporting said plungers above saidbarrels, rods secured to the barrel-supporting member passing looselythrough the plunger-supporting member, to guide the latter during amovement toward or away romthe plunger-supporting member, and adjustablelatching means carried by said last named member to limit the movementof said barrel-supporting member in either direction, substantially asdescribed.

12. A core-making device comprising a plurality of barrels, plungersmovable in said barrels, a longitudinal member from which said barrelsdepend, another longitudinal member supporting said plungers above saidbarrels, rods secured to the barrel-supporting member, passing looselythrough the plunger-supporting member to guide the latter during itsmovement toward the plunger-supporting member, bosses projecting fromone side of said last named member, rods projecting downwardly from saidbosses, collars adjustably movable on said rods, and latches pivotallycarried by said collars to engage the upper or lower surface of saidbarrel-supporting member, substantially as described.

1.3. A core-making device comprising a plurality of barrels, hollowvplungers movable in said barrels, a longitudinal member from which saidbarrels depend, another longitudinal member supporting said plun gersabove said barrels, rods secured to the barrel-supporting member,passing loosely through the plunger-supporting member, cylinders mountedon said last named memberthrough which said rods also pass, rods adaptedto pass through said hollow plungers into their respective `corebarrels, and means guided by said cylinders for collectively forcingsaid last named rods through said plungers, substantially as described.

14. A eoremaking device comprising a plurality of barrels, hollowplungers movable in said barrels, a longitudinal member from which saidbarrels depend, another longitudinal member supporting said plungersabove said barrels, rods secured to the barrel-supporting member,passing loosely through the plunger-supporting member, to guide thelatter during its movement toward the plunger-supporting member, uprightguides secured to said last named member, i bar having a verticalmovement directed by said guides, and a plurality of rods depending.from said bar and adapted to be forced by the latter through the hollowplungers, substantially as described.

l5. A core-making device comprising a plurality oi barrels, hollowplungers movable in said barrels, a longitudinal member from which saidbarrels depend, another longitudinal member supporting said plungers'above said barrels, rods secured to the barrel-supporting member,passing loosely through the plungersupporting member, cylinders mountedon said last named member through which said rods also pass, a barhaving end por ions vertically slidable upon said cylinders, a pluralityof rods depending ifrom said bar and adapted to be forced by the latterthrough said hollow plungers, and coil springs encircling said.cylinders between said bar and the plungersupporting member, to normallyhold said rods above the lower ends of said plungers, substantially asdescribed.

ln testimony whereof we have hereunto set our'hands, TVILLIMI JOHNSTONthe 28th day of September, 1914i, and CHARLES H. Rosina the 5th 'day ofOctober, 1914.

VLLAM JOHNSTON. CHARLES H. ROMER.

`Witnesses for Villiam Johnston:

M. D. BAKER, ELSIE M. LINDAI-IL.

Witnesses for Charles H. Romer:

ERNEST T. Hoeren, HOWARD S. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

6 Washington, D. C.

